Added some tests that cover entry and attribute caching.
The tests currently fail on OS X anywhere that they assume that entries won't be cached. For #1.geesefs-0-30-9
Aaron Jacobs
commit
aa3d5840a3
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@ -0,0 +1,350 @@
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// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cachingfs
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import (
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"fmt"
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"os"
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"time"
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"github.com/jacobsa/fuse"
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"github.com/jacobsa/fuse/fuseutil"
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"github.com/jacobsa/gcloud/syncutil"
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"golang.org/x/net/context"
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)
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const (
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// Sizes of the files according to the file system.
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FooSize = 123
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BarSize = 456
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)
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// A file system with a fixed structure that looks like this:
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//
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// foo
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// dir/
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// bar
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//
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// The file system is configured with durations that specify how long to allow
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// inode entries and attributes to be cached, used when responding to fuse
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// requests. It also exposes methods for renumbering inodes and updating mtimes
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// that are useful in testing that these durations are honored.
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type CachingFS interface {
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fuse.FileSystem
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// Return the current inode ID of the file/directory with the given name.
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FooID() fuse.InodeID
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DirID() fuse.InodeID
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BarID() fuse.InodeID
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// Cause the inode IDs to change to values that have never before been used.
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RenumberInodes()
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// Cause further queries for the attributes of inodes to use the supplied
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// time as the inode's mtime.
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SetMtime(mtime time.Time)
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}
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// Create a file system that issues cacheable responses according to the
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// following rules:
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//
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// * LookUpInodeResponse.Entry.EntryExpiration is set according to
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// lookupEntryTimeout.
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//
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// * GetInodeAttributesResponse.AttributesExpiration is set according to
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// getattrTimeout.
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//
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// * Nothing else is marked cacheable. (In particular, the attributes
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// returned by LookUpInode are not cacheable.)
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//
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func NewCachingFS(
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lookupEntryTimeout time.Duration,
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getattrTimeout time.Duration) (fs CachingFS, err error) {
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roundUp := func(n fuse.InodeID) fuse.InodeID {
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return numInodes * ((n + numInodes - 1) / numInodes)
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}
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cfs := &cachingFS{
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lookupEntryTimeout: lookupEntryTimeout,
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getattrTimeout: getattrTimeout,
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baseID: roundUp(fuse.RootInodeID + 1),
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mtime: time.Now(),
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}
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cfs.mu = syncutil.NewInvariantMutex(cfs.checkInvariants)
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fs = cfs
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return
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}
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const (
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// Inode IDs are issued such that "foo" always receives an ID that is
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// congruent to fooOffset modulo numInodes, etc.
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fooOffset = iota
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dirOffset
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barOffset
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numInodes
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)
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type cachingFS struct {
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fuseutil.NotImplementedFileSystem
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/////////////////////////
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// Constant data
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/////////////////////////
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lookupEntryTimeout time.Duration
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getattrTimeout time.Duration
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/////////////////////////
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// Mutable state
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/////////////////////////
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mu syncutil.InvariantMutex
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// The current ID of the lowest numbered non-root inode.
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//
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// INVARIANT: baseID > fuse.RootInodeID
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// INVARIANT: baseID % numInodes == 0
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//
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// GUARDED_BY(mu)
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baseID fuse.InodeID
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// GUARDED_BY(mu)
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mtime time.Time
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}
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////////////////////////////////////////////////////////////////////////
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// Helpers
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////////////////////////////////////////////////////////////////////////
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func (fs *cachingFS) checkInvariants() {
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// INVARIANT: baseID > fuse.RootInodeID
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// INVARIANT: baseID % numInodes == 0
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if fs.baseID <= fuse.RootInodeID || fs.baseID%numInodes != 0 {
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panic(fmt.Sprintf("Bad baseID: %v", fs.baseID))
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}
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) fooID() fuse.InodeID {
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return fs.baseID + fooOffset
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) dirID() fuse.InodeID {
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return fs.baseID + dirOffset
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) barID() fuse.InodeID {
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return fs.baseID + barOffset
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) rootAttrs() fuse.InodeAttributes {
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return fuse.InodeAttributes{
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Mode: os.ModeDir | 0777,
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Mtime: fs.mtime,
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}
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) fooAttrs() fuse.InodeAttributes {
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return fuse.InodeAttributes{
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Size: FooSize,
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Mode: 0777,
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Mtime: fs.mtime,
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}
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) dirAttrs() fuse.InodeAttributes {
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return fuse.InodeAttributes{
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Mode: os.ModeDir | 0777,
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Mtime: fs.mtime,
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}
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *cachingFS) barAttrs() fuse.InodeAttributes {
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return fuse.InodeAttributes{
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Size: BarSize,
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Mode: 0777,
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Mtime: fs.mtime,
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}
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}
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////////////////////////////////////////////////////////////////////////
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// Public interface
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////////////////////////////////////////////////////////////////////////
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) FooID() fuse.InodeID {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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return fs.fooID()
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) DirID() fuse.InodeID {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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return fs.dirID()
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) BarID() fuse.InodeID {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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return fs.barID()
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) RenumberInodes() {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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fs.baseID += numInodes
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) SetMtime(mtime time.Time) {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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fs.mtime = mtime
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}
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////////////////////////////////////////////////////////////////////////
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// FileSystem methods
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////////////////////////////////////////////////////////////////////////
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func (fs *cachingFS) Init(
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ctx context.Context,
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req *fuse.InitRequest) (resp *fuse.InitResponse, err error) {
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resp = &fuse.InitResponse{}
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return
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) LookUpInode(
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ctx context.Context,
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req *fuse.LookUpInodeRequest) (resp *fuse.LookUpInodeResponse, err error) {
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resp = &fuse.LookUpInodeResponse{}
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fs.mu.Lock()
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defer fs.mu.Unlock()
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// Find the ID and attributes.
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var id fuse.InodeID
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var attrs fuse.InodeAttributes
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switch req.Name {
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case "foo":
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// Parent must be the root.
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if req.Parent != fuse.RootInodeID {
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err = fuse.ENOENT
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return
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}
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id = fs.fooID()
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attrs = fs.fooAttrs()
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case "dir":
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// Parent must be the root.
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if req.Parent != fuse.RootInodeID {
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err = fuse.ENOENT
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return
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}
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id = fs.dirID()
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attrs = fs.dirAttrs()
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case "bar":
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// Parent must be dir.
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if req.Parent == fuse.RootInodeID || req.Parent%numInodes != dirOffset {
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err = fuse.ENOENT
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return
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}
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id = fs.barID()
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attrs = fs.barAttrs()
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default:
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err = fuse.ENOENT
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return
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}
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// Fill in the response.
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resp.Entry.Child = id
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resp.Entry.Attributes = attrs
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resp.Entry.EntryExpiration = time.Now().Add(fs.lookupEntryTimeout)
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return
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}
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// LOCKS_EXCLUDED(fs.mu)
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func (fs *cachingFS) GetInodeAttributes(
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ctx context.Context,
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req *fuse.GetInodeAttributesRequest) (
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resp *fuse.GetInodeAttributesResponse, err error) {
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resp = &fuse.GetInodeAttributesResponse{}
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fs.mu.Lock()
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defer fs.mu.Unlock()
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// Figure out which inode the request is for.
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var attrs fuse.InodeAttributes
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switch {
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case req.Inode == fuse.RootInodeID:
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attrs = fs.rootAttrs()
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case req.Inode%numInodes == fooOffset:
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attrs = fs.fooAttrs()
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case req.Inode%numInodes == dirOffset:
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attrs = fs.dirAttrs()
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case req.Inode%numInodes == barOffset:
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attrs = fs.barAttrs()
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}
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// Fill in the response.
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resp.Attributes = attrs
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resp.AttributesExpiration = time.Now().Add(fs.getattrTimeout)
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return
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}
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func (fs *cachingFS) OpenDir(
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ctx context.Context,
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req *fuse.OpenDirRequest) (
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resp *fuse.OpenDirResponse, err error) {
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resp = &fuse.OpenDirResponse{}
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return
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}
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func (fs *cachingFS) OpenFile(
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ctx context.Context,
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req *fuse.OpenFileRequest) (
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resp *fuse.OpenFileResponse, err error) {
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resp = &fuse.OpenFileResponse{}
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return
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}
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@ -0,0 +1,550 @@
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// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cachingfs_test
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import (
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"io/ioutil"
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"log"
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"os"
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"path"
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"strings"
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"syscall"
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"testing"
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"time"
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"github.com/jacobsa/fuse"
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"github.com/jacobsa/fuse/samples/cachingfs"
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"github.com/jacobsa/gcsfuse/timeutil"
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. "github.com/jacobsa/ogletest"
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"golang.org/x/net/context"
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)
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func TestHelloFS(t *testing.T) { RunTests(t) }
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////////////////////////////////////////////////////////////////////////
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// Boilerplate
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////////////////////////////////////////////////////////////////////////
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type cachingFSTest struct {
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dir string
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fs cachingfs.CachingFS
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mfs *fuse.MountedFileSystem
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initialMtime time.Time
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}
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var _ TearDownInterface = &cachingFSTest{}
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func (t *cachingFSTest) setUp(
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lookupEntryTimeout time.Duration,
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getattrTimeout time.Duration) {
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var err error
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// Set up a temporary directory for mounting.
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t.dir, err = ioutil.TempDir("", "caching_fs_test")
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AssertEq(nil, err)
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// Create the file system.
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t.fs, err = cachingfs.NewCachingFS(lookupEntryTimeout, getattrTimeout)
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AssertEq(nil, err)
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// Mount it.
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t.mfs, err = fuse.Mount(t.dir, t.fs)
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AssertEq(nil, err)
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err = t.mfs.WaitForReady(context.Background())
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AssertEq(nil, err)
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// Set up the mtime.
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t.initialMtime = time.Date(2012, 8, 15, 22, 56, 0, 0, time.Local)
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t.fs.SetMtime(t.initialMtime)
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}
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func (t *cachingFSTest) TearDown() {
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// Was the file system mounted?
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if t.mfs == nil {
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return
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}
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// Unmount the file system. Try again on "resource busy" errors.
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delay := 10 * time.Millisecond
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for {
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err := t.mfs.Unmount()
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if err == nil {
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break
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}
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if strings.Contains(err.Error(), "resource busy") {
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log.Println("Resource busy error while unmounting; trying again")
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time.Sleep(delay)
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delay = time.Duration(1.3 * float64(delay))
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continue
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}
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panic("MountedFileSystem.Unmount: " + err.Error())
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}
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if err := t.mfs.Join(context.Background()); err != nil {
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panic("MountedFileSystem.Join: " + err.Error())
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}
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}
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func (t *cachingFSTest) statAll() (foo, dir, bar os.FileInfo) {
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var err error
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foo, err = os.Stat(path.Join(t.dir, "foo"))
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AssertEq(nil, err)
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dir, err = os.Stat(path.Join(t.dir, "dir"))
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AssertEq(nil, err)
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bar, err = os.Stat(path.Join(t.dir, "dir/bar"))
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AssertEq(nil, err)
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return
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}
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func (t *cachingFSTest) openFiles() (foo, dir, bar *os.File) {
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var err error
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foo, err = os.Open(path.Join(t.dir, "foo"))
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AssertEq(nil, err)
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dir, err = os.Open(path.Join(t.dir, "dir"))
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AssertEq(nil, err)
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bar, err = os.Open(path.Join(t.dir, "dir/bar"))
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AssertEq(nil, err)
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return
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}
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func (t *cachingFSTest) statFiles(
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f, g, h *os.File) (foo, dir, bar os.FileInfo) {
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var err error
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foo, err = f.Stat()
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AssertEq(nil, err)
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dir, err = g.Stat()
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AssertEq(nil, err)
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bar, err = h.Stat()
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AssertEq(nil, err)
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return
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}
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func getInodeID(fi os.FileInfo) uint64 {
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return fi.Sys().(*syscall.Stat_t).Ino
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}
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////////////////////////////////////////////////////////////////////////
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// Basics
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////////////////////////////////////////////////////////////////////////
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type BasicsTest struct {
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cachingFSTest
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}
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var _ SetUpInterface = &BasicsTest{}
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func init() { RegisterTestSuite(&BasicsTest{}) }
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func (t *BasicsTest) SetUp(ti *TestInfo) {
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const (
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lookupEntryTimeout = 0
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getattrTimeout = 0
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)
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t.cachingFSTest.setUp(lookupEntryTimeout, getattrTimeout)
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}
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func (t *BasicsTest) StatNonexistent() {
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names := []string{
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"blah",
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"bar",
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"dir/blah",
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"dir/dir",
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"dir/foo",
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}
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for _, n := range names {
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_, err := os.Stat(path.Join(t.dir, n))
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AssertNe(nil, err)
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ExpectTrue(os.IsNotExist(err), "n: %s, err: %v", n, err)
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}
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}
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|
||||
func (t *BasicsTest) StatFoo() {
|
||||
fi, err := os.Stat(path.Join(t.dir, "foo"))
|
||||
AssertEq(nil, err)
|
||||
|
||||
ExpectEq("foo", fi.Name())
|
||||
ExpectEq(cachingfs.FooSize, fi.Size())
|
||||
ExpectEq(0777, fi.Mode())
|
||||
ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
|
||||
ExpectFalse(fi.IsDir())
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fi))
|
||||
}
|
||||
|
||||
func (t *BasicsTest) StatDir() {
|
||||
fi, err := os.Stat(path.Join(t.dir, "dir"))
|
||||
AssertEq(nil, err)
|
||||
|
||||
ExpectEq("dir", fi.Name())
|
||||
ExpectEq(os.ModeDir|0777, fi.Mode())
|
||||
ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
|
||||
ExpectTrue(fi.IsDir())
|
||||
ExpectEq(t.fs.DirID(), getInodeID(fi))
|
||||
}
|
||||
|
||||
func (t *BasicsTest) StatBar() {
|
||||
fi, err := os.Stat(path.Join(t.dir, "dir/bar"))
|
||||
AssertEq(nil, err)
|
||||
|
||||
ExpectEq("bar", fi.Name())
|
||||
ExpectEq(cachingfs.BarSize, fi.Size())
|
||||
ExpectEq(0777, fi.Mode())
|
||||
ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
|
||||
ExpectFalse(fi.IsDir())
|
||||
ExpectEq(t.fs.BarID(), getInodeID(fi))
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// No caching
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
type NoCachingTest struct {
|
||||
cachingFSTest
|
||||
}
|
||||
|
||||
var _ SetUpInterface = &NoCachingTest{}
|
||||
|
||||
func init() { RegisterTestSuite(&NoCachingTest{}) }
|
||||
|
||||
func (t *NoCachingTest) SetUp(ti *TestInfo) {
|
||||
const (
|
||||
lookupEntryTimeout = 0
|
||||
getattrTimeout = 0
|
||||
)
|
||||
|
||||
t.cachingFSTest.setUp(lookupEntryTimeout, getattrTimeout)
|
||||
}
|
||||
|
||||
func (t *NoCachingTest) StatStat() {
|
||||
fooBefore, dirBefore, barBefore := t.statAll()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// Make sure everything matches.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(fooBefore.ModTime()))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(dirBefore.ModTime()))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(barBefore.ModTime()))
|
||||
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *NoCachingTest) StatRenumberStat() {
|
||||
t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new inode IDs, because the entries should not have been
|
||||
// cached.
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *NoCachingTest) StatMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
t.statAll()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new mtimes, because the attributes should not have been
|
||||
// cached.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
func (t *NoCachingTest) StatRenumberMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new inode IDs and mtimes, because nothing should have
|
||||
// been cached.
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Entry caching
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
type EntryCachingTest struct {
|
||||
cachingFSTest
|
||||
lookupEntryTimeout time.Duration
|
||||
}
|
||||
|
||||
var _ SetUpInterface = &EntryCachingTest{}
|
||||
|
||||
func init() { RegisterTestSuite(&EntryCachingTest{}) }
|
||||
|
||||
func (t *EntryCachingTest) SetUp(ti *TestInfo) {
|
||||
t.lookupEntryTimeout = 250 * time.Millisecond
|
||||
t.cachingFSTest.setUp(t.lookupEntryTimeout, 0)
|
||||
}
|
||||
|
||||
func (t *EntryCachingTest) StatStat() {
|
||||
fooBefore, dirBefore, barBefore := t.statAll()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// Make sure everything matches.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(fooBefore.ModTime()))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(dirBefore.ModTime()))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(barBefore.ModTime()))
|
||||
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *EntryCachingTest) StatRenumberStat() {
|
||||
fooBefore, dirBefore, barBefore := t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should still see the old inode IDs, because the inode entries should
|
||||
// have been cached.
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
|
||||
// But after waiting for the entry cache to expire, we should see the new
|
||||
// IDs.
|
||||
time.Sleep(2 * t.lookupEntryTimeout)
|
||||
fooAfter, dirAfter, barAfter = t.statAll()
|
||||
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *EntryCachingTest) StatMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
t.statAll()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new mtimes, because the attributes should not have been
|
||||
// cached.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
func (t *EntryCachingTest) StatRenumberMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
fooBefore, dirBefore, barBefore := t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should still see the old inode IDs, because the inode entries should
|
||||
// have been cached. But the attributes should not have been.
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
|
||||
// After waiting for the entry cache to expire, we should see fresh
|
||||
// everything.
|
||||
time.Sleep(2 * t.lookupEntryTimeout)
|
||||
fooAfter, dirAfter, barAfter = t.statAll()
|
||||
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Attribute caching
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
type AttributeCachingTest struct {
|
||||
cachingFSTest
|
||||
getattrTimeout time.Duration
|
||||
}
|
||||
|
||||
var _ SetUpInterface = &AttributeCachingTest{}
|
||||
|
||||
func init() { RegisterTestSuite(&AttributeCachingTest{}) }
|
||||
|
||||
func (t *AttributeCachingTest) SetUp(ti *TestInfo) {
|
||||
t.getattrTimeout = 250 * time.Millisecond
|
||||
t.cachingFSTest.setUp(0, t.getattrTimeout)
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatStat() {
|
||||
fooBefore, dirBefore, barBefore := t.statAll()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// Make sure everything matches.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(fooBefore.ModTime()))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(dirBefore.ModTime()))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(barBefore.ModTime()))
|
||||
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatRenumberStat() {
|
||||
t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new inode IDs, because the entries should not have been
|
||||
// cached.
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
t.statAll()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see the new attributes, since the entry had to be looked up
|
||||
// again and the new attributes were returned with the entry.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatMtimeStat_ViaFileDescriptor() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
// Open everything, fixing a particular inode number for each.
|
||||
foo, dir, bar := t.openFiles()
|
||||
defer func() {
|
||||
foo.Close()
|
||||
dir.Close()
|
||||
bar.Close()
|
||||
}()
|
||||
|
||||
fooBefore, dirBefore, barBefore := t.statFiles(foo, dir, bar)
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statFiles(foo, dir, bar)
|
||||
|
||||
// We should still see the old cached mtime.
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(fooBefore.ModTime()))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(dirBefore.ModTime()))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(barBefore.ModTime()))
|
||||
|
||||
// After waiting for the attribute cache to expire, we should see the fresh
|
||||
// mtime.
|
||||
time.Sleep(2 * t.getattrTimeout)
|
||||
fooAfter, dirAfter, barAfter = t.statFiles(foo, dir, bar)
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatRenumberMtimeStat() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
t.statAll()
|
||||
t.fs.RenumberInodes()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statAll()
|
||||
|
||||
// We should see new everything, because this is the first time the new
|
||||
// inodes have been encountered. Entries for the old ones should not have
|
||||
// been cached.
|
||||
ExpectEq(t.fs.FooID(), getInodeID(fooAfter))
|
||||
ExpectEq(t.fs.DirID(), getInodeID(dirAfter))
|
||||
ExpectEq(t.fs.BarID(), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
|
||||
func (t *AttributeCachingTest) StatRenumberMtimeStat_ViaFileDescriptor() {
|
||||
newMtime := t.initialMtime.Add(time.Second)
|
||||
|
||||
// Open everything, fixing a particular inode number for each.
|
||||
foo, dir, bar := t.openFiles()
|
||||
defer func() {
|
||||
foo.Close()
|
||||
dir.Close()
|
||||
bar.Close()
|
||||
}()
|
||||
|
||||
fooBefore, dirBefore, barBefore := t.statFiles(foo, dir, bar)
|
||||
t.fs.RenumberInodes()
|
||||
t.fs.SetMtime(newMtime)
|
||||
fooAfter, dirAfter, barAfter := t.statFiles(foo, dir, bar)
|
||||
|
||||
// We should still see the old cached mtime with the old inode ID.
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(fooBefore.ModTime()))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(dirBefore.ModTime()))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(barBefore.ModTime()))
|
||||
|
||||
// After waiting for the attribute cache to expire, we should see the fresh
|
||||
// mtime, still with the old inode ID.
|
||||
time.Sleep(2 * t.getattrTimeout)
|
||||
fooAfter, dirAfter, barAfter = t.statFiles(foo, dir, bar)
|
||||
|
||||
ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
|
||||
ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
|
||||
ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
|
||||
|
||||
ExpectThat(fooAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(dirAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
ExpectThat(barAfter.ModTime(), timeutil.TimeEq(newMtime))
|
||||
}
|
||||
Loading…
Reference in New Issue